Thanks nyemi!

Yes I made my own version...The hardware is the same as gompy made, but I rewrote the whole software. i made it because it wasn't working perfect with my scooter(and also for graduate work in the university)...I made also my own features(use of E85, LCD, temp sensor).
But I get the same error...It is some kind of hardware error, I get a double input pulse when rpm >3000, and because of this i get the output at wrong time...i only have scope in the laboratory, so i cant measure what happens on the scooter...

So i dont know what can be the problem...maybe the input signal is messy because of the alternator...i have to measure somehow...
Or anybody an idea?

Thanks!
And also thank for Gompy, and the programmer, who helped me to construct this